This is the maths I run on every deal before my members see it: referral fee, FBA fulfilment with the 2026 fuel surcharge, the 2% Digital Services Fee most calculators forget, and VAT, both registered and not. Enter a deal and see what’s actually left.
Doing this for every product you look at? This page does one deal at a time. SellerAmp SAS runs the same maths automatically on every retail page and Amazon listing you visit: profit, ROI, sales estimates, eligibility and IP-risk alerts, while you browse. It’s what I have my members use. Start on the 14-day free trial and enter code AMAVIP: 50% off your first month. AMAVIP_ANNUAL: 5% off annual.
Fee figures from Amazon’s published UK rate cards effective 1 July 2026 (incl. the 1.5% fuel surcharge and 2% Digital Services Fee). A guide, not a quote. Seller Central’s fee preview is final. VAT mechanics explained in my VAT calculator; box-size gotchas in the FBA fee checker; the whole economics story in the Online Arbitrage UK guide.
About the author
Jack Bayliss is the founder of Aftermarket Arbitrage, where a team and a purpose-built sourcing engine find and verify Amazon UK deals for members every day. Meet the community on the community page or book a free call.
